NoSQL Usecase

http://highscalability.com/blog/2010/12/6/what-the-heck-are-you-actually-using-nosql-for.html

http://readwrite.com/2011/02/03/the-big-list-of-nosql-use-case#awesm=~ohAT4t5iWy5FMs

http://www.eweek.com/database/slideshows/nosql-database-deployments-10-real-world-examples/